Hypodermic syringe.



JAMES T. GREELEY, 0F NASHUA, NEW HAMPSHIRE, ASSIGNOR TO GREELEY LABORA- TORIES, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

HYPODERMIC SYRINGE.

Specication of Letters Patent.

Patented Aug.' 14k, 1917.,

Application led .Tune 24, 1912. Serial No. 705,415.

a resident of Nashua, in the county of Hillsboro and State of New Hampshire, have invented certain new and useful improve-V ments in Hypoderrnic Syringes, of which the following is a specification.

This invention has for its objectJ to provide a hypodermic syringe comprising a liquid Acontainer and a hypodermic needle separably connected, the container being hermetically closed and charged with the liquid to be injected and the needle being adapted when applied to the container to penetrate a portion of the same and form an outlet through which the liquid may be ejected.

The invention consists in the improvements which 1 will now proceed to describe and claim.

0f the accompanying drawings Figure 1 represents a Vlongitudinal section of a hypodermic needle constituting one of the members of my improved syringe.

Fig. 2 represents a partial longitudinal section and partial side elevation of the container constituting the other member of the syringe.

Fig. 3 represents a longitudinal section showing the container and syringe assembled, and in condition for operation, a part of the container being broken away.

Fig. 4 represents a section on line 4-4 of Fig. 2. v

The drawing represents the parts considerably enlarged.

The same reference characters indicate the same parts in all the gures.

In the drawings :-12 represents a liquid container formed as a collapsible capsule,`

the material used being a suitable ductile metal or alloy 'suchA as is used for collapsible tubes to contain glue, paint and other materials The inner end of the capsule is adapted to be closed in the usual or any suitable way after the capsule has been filled. The opposite or outer end of the capsule is provided with a reduced neck 13 adapted to enter the hub of a hypodermic needle and constituting a seat or coupling part adapted to couple the needle hub to the container. As here shown, the neck 13 is considerably thicker than the collapsible wall of the capsule, the neck being therefore relatively rigid.

The outer end of the neck 13 is provided with an integral head 14J which hermetically closes the neck and is penetrable by the inner end of a needle, as hereinafterl described.

16 represents a hypodermic needle having a penetrating outer end as usual and having also a penetrating inner end. To the needle, between lits ends, is attached a hub 17 constituting a socket or coupling part adapted to receive the projecting portion of the neck 13 and to suitably engage the same to insure the retention of the needle in its operative relation to the container. As here shown, the neck 13fis externally screw threaded and the mouth of the hub 17 is internally screw threaded. The said parts of the neck and hub may, however, be formed to engage each other frictionally instead of positively. The pointed inner end of the needle projects a considerablefA distance into the interior of the hub, as shown by Figs. 1 and 3, the pointed inner end of the needle being at such distance from the attached end of the hub that when the parts are assembled, the inner end of the needle is caused to penetrate the head 14 and thus establish a communication between the interior of the container and the lumen of the needle, as shown by Fig. 3.

rlhe hub 17 is preferably provided with a compressible washer 18 of rubber or other suitable material which is adapted to be compressed by the operation of assembling the needle and container, in such manner as to form a liquid tight joint around the inner end portion of the needle, as indicated `by Fig. 3. Before the parts are assembled,

the washer 18 is preferably partially penetrated by the inner end of the needle, as shown by Fig. 1, the washer occupylng the outer portion of the interior of the hub.

The entrance of the neck 13 into'the hub displaces and compresses the washer which is forced against a tapering lnternal surface portion 17a of the hub, and is thus pressed inwardly against the periphery of the needle.

19 represents an annularrigid grip member which surrounds the base portion of the neck 13 and'bears upon the breast portion 20 which connects the body with the neck of the container, and is adapted to receive the pressure of the thumb and nger which holds the syringe while the charge is being ejected by the compression of the body of the container, the object of the grip member being to prevent the collapsing of the breast portion of the container, as set forth in Letters Patent of the United States No. 1,021,146 dated March 26, 1912. The grip member 19 is distinguished from the grip member shown in said patent by the fact that its central orifice has a wall 19 formed to interlock vwith a seat 13a on the neck 13 in such manner as to prevent rotation of the grip member 19 on the neck. As shown by Fig. 4, the inner wall 19 and the seat 13a are of polygonal form and are fitted together friction tight so that a non-rotative engagement is established.

lt' willnow be seen that lthe two parts or units of the syringe, namely, the container and theneedle, are adapted to be placed separately on the market, each container having the desired quantity of the solution to lbe injected and being hermetically closed so that there is no possibility of evaporation or deterioration of the charge, while it is kept in stock. An operative syringe may be quickly provided by assembling a container having the desired solution and a needle, the operation of assembling theparts insuring a tight joint so that the liquid can escape from the container only through the needle.

interposed between the members of the lcoupling is the compressible washer 18 which, as shown in Fig'. 1, normally occupies such position as to present a barrier that will prevent the needle 16 from accidentally puncturing the integral sealing head 14. rlhe two members of the syrin e may be connected and handled or shippe if desired without liability of any accidental puncturing of the integral head 14, because the coupllng members can not be interengaged to an great extent without considerable force being intentionally employed. The head 17 may be screwed far enough down upon the externally threaded neck 13 until the base of the washer 18 bears upon the flat upper face of the head 14, and the parts handled or shipped sol connected.

When it is`desired that the lower end of the needle shall penetrate the head 14, the hub 17 may be grasped by one hand and the grip member 19 by the other hand-and then the two members can be relatively ronaaaeae tated with sudicient force so that the washer 18 will be driven up toward and tothe position indicated in Fig. 3, the last of this motion resulting in the end of the needle penetrating the head 14.

Before the parts are assembled as described, the washer 18 retains the position and condition shown in Fig. 1 so that it protects the needle and prevents access of any foreign matter to the inner end thereof, it

being understood that the outer end of the needle may be protected in any suitable way.. The capsule, its neck, and the neck closing head are formed from a single piece of ductile material. rl`he relatively rigid neck 13 carries the head 14, introduces said head into the needle hub, and holds the head in the path of the penetrating needle, which acts on the head after its entrance into the hub. It will be seen that there is no occasion for touching the head by the ngers at any time either before or after the capsule sterile.

Al claim:

1. A hypodermic needle havin penetrating outer and inner ends, an a hub secured between the said ends formed to surround the said inner end and to receive the neck of a liquid container, the hub being provided internally with an unperforated compressible washer in which the inner end of the needle is embedded, said washer being adapted to be compressed around the inner end portion of the needle bythe ap lication of the hub to the neck of a liqui container.

ity, if the most ordinary I care is observed, of rendering the head" unlll@ 2. A hypodermic needle having penetrating outer and inner ends, and a hub secured between the said ends formed to surround the said inner end and to receive the neck of a liquid container, the hub being provided with a tapered internal surface and with an unperforated washer in which the inner end of the needle is embedded, said washer being adapted to be compressed be tween said surface and the needle by the application of the hub to the neck of a liquid container.

3. A'hypodermic syringe member comosed of a collapsible liquid container ormed as a capsule and having a reduced integral neck having a threaded portion adapted to engage an internally threaded` needle hub and provided with a locking seat at its base portion and With a rigid annular grip member having an opening conforming to said seat whereby the neck may be forcibly screwed into such needle hub, the area of said grip member being such as to enable it to be grasped when screwing'-- the parts together without compressing the collapsible container.

In testimony whereof l have axed my signature7 in presence of two witnesses.

` JAMES T. GREELEY. Witnesses:

HELEN E. Woonmzr, A. M. MERREL. 

